Vibrant as crepe-paper flowers.
Nasturtium is a bright orange.
It can be described as bright, vivid, brilliant and glowing.
Set in black, because black reads best on it.
Tropaeolum, commonly known as nasturtium, is a genus of roughly 80 species of annual and perennial herbaceous flowering plants. It was named by Carl Linnaeus in his book Species Plantarum and is the only genus in the family Tropaeolaceae. The nasturtiums received their common name because they produce an oil similar to that of watercress.
Read on WikipediaNasturtium is a genus of a small number of plant species in the family Brassicaceae commonly known as watercress or yellowcress. The best known species are the edible Nasturtium officinale and Nasturtium microphyllum. Nasturtium was previously synonymised with Rorippa, but molecular evidence supports its maintenance as a distinct genus more closely related to Cardamine than to Rorippa sensu stricto.
Read on WikipediaProper noun